1.
b3
Nf6
2.
Bb2
g6
3.
g3
Bg7
4.
Bg2
O-O
5.
Nf3
d6
6.
O-O
e5
7.
c4
c6
8.
Nc3
Re8
9.
d3
d5
10.
cxd5
cxd5
11.
Rc1
Nc6
12.
Qc2
Bg4
13.
Qb1
d4
14.
Na4
Rc8
15.
h3
Be6
16.
Nc5
Bd5
17.
Ne4
Nh5
18.
Ba3
Bf8
19.
Bxf8
Rxf8
20.
Ned2
Qe7
21.
Nc4
b5
22.
e4
dxe3
23.
Nxe3
Be6
24.
Qb2
Qd6
25.
Rfd1
Nd4
26.
Nxd4
exd4
27.
Ng4
b4
28.
Qe2
Rc3
29.
Qe5
Qxe5
30.
Nxe5
Rfc8
31.
Nc6
R8xc6
32.
Bxc6
Bxh3
33.
Bd5
Nf6
34.
Bc4
Nd7
35.
Re1
Kf8
36.
f4
Bf5
37.
Kf2
Nc5
38.
Rxc3
bxc3
39.
Ke2
Bg4+
40.
Kf2
Bf5
1/2-1/2
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Event
Site
Las Vegas
Date
1974.03.19
Round
3
White
Gabrielson, Roger
Black
Grefe, John Alan
Result
1/2-1/2
[Event "Las Vegas National op"] [Site "Las Vegas"] [Date "1974.03.19"] [Round "3"] [White "Gabrielson, Roger"] [Black "Grefe, John Alan"] [Result "1/2-1/2"] 1. b3 Nf6 2. Bb2 g6 3. g3 Bg7 4. Bg2 O-O 5. Nf3 d6 6. O-O e5 7. c4 c6 8. Nc3 Re8 9. d3 d5 10. cxd5 cxd5 11. Rc1 Nc6 12. Qc2 Bg4 13. Qb1 d4 14. Na4 Rc8 15. h3 Be6 16. Nc5 Bd5 17. Ne4 Nh5 18. Ba3 Bf8 19. Bxf8 Rxf8 20. Ned2 Qe7 21. Nc4 b5 22. e4 dxe3 23. Nxe3 Be6 24. Qb2 Qd6 25. Rfd1 Nd4 26. Nxd4 exd4 27. Ng4 b4 28. Qe2 Rc3 29. Qe5 Qxe5 30. Nxe5 Rfc8 31. Nc6 R8xc6 32. Bxc6 Bxh3 33. Bd5 Nf6 34. Bc4 Nd7 35. Re1 Kf8 36. f4 Bf5 37. Kf2 Nc5 38. Rxc3 bxc3 39. Ke2 Bg4+ 40. Kf2 Bf5 1/2-1/2